Malware Analysis Report

2025-01-18 12:58

Sample ID 240613-d4jbtswfpl
Target 2024-06-13_5d303cc11e5c982a5fe6b9063913567b_cryptolocker
SHA256 c5337cfe4119c7a7f51654d3964338758a2d4cf9cf6e7288d7f3192ad92149cf
Tags
upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c5337cfe4119c7a7f51654d3964338758a2d4cf9cf6e7288d7f3192ad92149cf

Threat Level: Known bad

The file 2024-06-13_5d303cc11e5c982a5fe6b9063913567b_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

UPX packed file

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 03:33

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
N/A N/A N/A N/A

Detection of Cryptolocker Samples

Description Indicator Process Target
N/A N/A N/A N/A

UPX dump on OEP (original entry point)

Description Indicator Process Target
N/A N/A N/A N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 03:33

Reported

2024-06-13 03:36

Platform

win7-20240419-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_5d303cc11e5c982a5fe6b9063913567b_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Detection of Cryptolocker Samples

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

UPX dump on OEP (original entry point)

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\asih.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-13_5d303cc11e5c982a5fe6b9063913567b_cryptolocker.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_5d303cc11e5c982a5fe6b9063913567b_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_5d303cc11e5c982a5fe6b9063913567b_cryptolocker.exe"

C:\Users\Admin\AppData\Local\Temp\asih.exe

"C:\Users\Admin\AppData\Local\Temp\asih.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp

Files

memory/2984-0-0x0000000000500000-0x000000000050F311-memory.dmp

memory/2984-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/2984-2-0x0000000000470000-0x0000000000476000-memory.dmp

memory/2984-9-0x00000000002D0000-0x00000000002D6000-memory.dmp

\Users\Admin\AppData\Local\Temp\asih.exe

MD5 adb7dfbf357e82b7b2a7e94f33c3787e
SHA1 aea30b813582eceec8efbf87c3c7b0dcad70f0ed
SHA256 9b0e3f1ce97de435729f1c38ef76746108600e49326316ae8430629dc922224a
SHA512 f2ecf428ff8c4e3a3f93c7ba2c7e705a8375867cb43b773fd5aa7e96da843e10e7c79c03e03465bbb7ef6201feabf8f899adda26ef4a9dbc9232058a87ecb5ff

memory/2984-13-0x0000000001FE0000-0x0000000001FF0000-memory.dmp

memory/2244-17-0x0000000000500000-0x000000000050F311-memory.dmp

memory/2984-16-0x0000000000500000-0x000000000050F311-memory.dmp

memory/2244-19-0x0000000000460000-0x0000000000466000-memory.dmp

memory/2244-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2244-27-0x0000000000500000-0x000000000050F311-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 03:33

Reported

2024-06-13 03:36

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_5d303cc11e5c982a5fe6b9063913567b_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Detection of Cryptolocker Samples

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

UPX dump on OEP (original entry point)

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-13_5d303cc11e5c982a5fe6b9063913567b_cryptolocker.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\asih.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_5d303cc11e5c982a5fe6b9063913567b_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_5d303cc11e5c982a5fe6b9063913567b_cryptolocker.exe"

C:\Users\Admin\AppData\Local\Temp\asih.exe

"C:\Users\Admin\AppData\Local\Temp\asih.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp

Files

memory/4112-0-0x0000000000500000-0x000000000050F311-memory.dmp

memory/4112-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/4112-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/4112-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\asih.exe

MD5 adb7dfbf357e82b7b2a7e94f33c3787e
SHA1 aea30b813582eceec8efbf87c3c7b0dcad70f0ed
SHA256 9b0e3f1ce97de435729f1c38ef76746108600e49326316ae8430629dc922224a
SHA512 f2ecf428ff8c4e3a3f93c7ba2c7e705a8375867cb43b773fd5aa7e96da843e10e7c79c03e03465bbb7ef6201feabf8f899adda26ef4a9dbc9232058a87ecb5ff

memory/1332-18-0x0000000000500000-0x000000000050F311-memory.dmp

memory/4112-17-0x0000000000500000-0x000000000050F311-memory.dmp

memory/1332-20-0x0000000000660000-0x0000000000666000-memory.dmp

memory/1332-26-0x0000000000500000-0x000000000050F311-memory.dmp